<template>
  <view>
    <view class="goods-list">
       <view v-for="(goods,i) in goodsList" :key="i" @click="gotoDetail(goods)">
     <my-goods :goods="goods"></my-goods>
       </view>
    </view>
    
    
  </view>
</template>

<script>
  export default {
    data() {
      return {
        
        queryObj:{
          query:'',
          cid:'',
          pagenum:1,
          pagesize:10,
        },
        goodsList:[],
        total:0,
        //是否正在请求数据
        isloading:false
      };
    },
    onLoad(otions) {
      //将页面参数转存到this.queryobj对象中
      this.queryObj.query = options.query || ''
      this.queryObj.cid =options.cid || ''
      this.getGoodsList()
    },
    methods:{
      //获取商品列表数据的方法
      async getGoodsList(cb){
        //打开节流阀
        this.isloading = true
        const{data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
        //只要数据请求完成，就立即调用cb回调函数
        cb&&cb()
        //关闭节流阀
        this.isloading =false
        if(res.meta.status !== 200)return uni.$showMsg()
        this.goodsList=[...this.goodsList,...res.message.goods]
        this.total =res.message.total
      },
      gotoDetail(goods){
        uni.navigateTo({
          url:'//subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
        })
      }
    },
    //触底加载事件
    onReachBottom() {
      //判断是否还有下一页数据
      if(this.queryObj.pagenum *this.queryObj.pagesize >= this.total) return uni.$showMsg("数据加载完毕")
      //判断是否正在请求其他数据，如果是，则不发起额外的请求
      if(this.isloading) return
      this.queryObj.pagenum +=1
      //重新获取列表数据
      this.getGoodsList()
    },
    //下拉刷新事件
    onPullDownRefresh() {
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading =false
      this.goodsList = []
      //重新发起请求
      this.getGoodsList(() => uni.stopPullDownRefresh())
    }
    
    
  }
</script>

<style lang="scss">



</style>
